it may be because of the number of programs that start at the same time that you turn on your PC. And even if you are not using them, these programs continue to run in the background, making the memory overloaded.

Manage All Startup Programs
To do this, simply click “Start”, then “Run”, or just type “Run” into the search box. A “Run exe” result will appear, click it. Type “miconfig exe” into the Run box, click “CLK”. A “Startup” tab will pop up in “System Configuration” window, click it. And then click the “Startup item” tab so you’ll get an alphabetically organized startup items. Select and uncheck the programs that you don’t need as you turn on your PC.

Use Disk CleanUp Tool
Click “Start”, type “Disk Cleanup” in the search box. As it appears on the box, click it. To make the “C” drive to scan, click “OK” then click the checkbox of any item if you want to delete the listed data upon scan completion. Finally, click “OK” to start the disk cleaning process.

Turn Off Services That Are Not Necessary

Click “Start”; click “Run” Type “misconfig exe” on the Run box. Click OK. A “Services” tab will pop up in the System Configuration window, click it. Click the “Service” tab to list the services alphabetically. Unclick what you do not need at start up to turn it off. Click “OK”. Restart your computer by clicking “Restart”.